特殊用法cracked residuum [residue]1.裂化渣油final residuum1.最后残渣; 渣油heavy liquid residuum1.重质液体残油hydrogenated residuum1.加氢后残渣long residuum1.久沸残渣short residuum1.脆残油; 真空(塔)蒸馏残渣; 浓缩残油steam-refined residuum1.汽炼渣油; 蒸汽精制油topped residuum1.拔顶残油vacuum residuum1.减压渣油